EP 0218135 B1 19910502 - SILICA AND BORON-CONTAINING ULTRAPHOSPHATE LASER GLASS WITH LOW CONCENTRATION QUENCHING AND IMPROVED THERMAL SHOCK RESISTANCE
Title (en)
SILICA AND BORON-CONTAINING ULTRAPHOSPHATE LASER GLASS WITH LOW CONCENTRATION QUENCHING AND IMPROVED THERMAL SHOCK RESISTANCE
Publication
Application
Priority
US 77991685 A 19850925
Abstract (en)
[origin: EP0218135A2] Neodymium-doped phosphate glasses having a refractive index, nd> 1.520; an Abbe number, Vd, < 60; a density < 3.0 g/cm<sup>3</sup>, a thermal expansion coefficient, a, ≤ 110 x 10<sup>-7</sup>°C<sup>-1</sup>; a Young's Modulus, E, < 70 x 10<sup>3</sup> N/mm<sup>2</sup>; a Poisson's Ratio, v, < 0.28; a thermal conductivity, K, > 0.5 W/m K, a thermal FOM - (1-v) K/αE > .7, consisting essentially of, in mol.%:and preferably containing an amount of Nd<sub>2</sub>0<sub>3</sub> effective for laser activity having an emission cross-section, a, > 3.5 x 10<sup>-20</sup> cm<sup>2</sup>; a fluorescence linewidth (Δλ<sub>fl</sub>) < 23.5 nm; a first e-folding time of the Nd<sup>3+</sup> fluorescence at 0.5 wt.% Nd<sub>2</sub>0<sub>3</sub> > 375 µsec, and a first e-folding time of the Nd<sup>3+</sup> fluorescence at 10 wt.% > 175 µsec at 10 wt.%, have very low self-concentration quenching rates.
IPC 1-7
IPC 8 full level
C03C 3/068 (2006.01); C03C 3/19 (2006.01); C03C 4/00 (2006.01); C03C 4/12 (2006.01)
CPC (source: EP US)
C03C 3/068 (2013.01 - EP US); C03C 3/19 (2013.01 - EP US); C03C 4/0071 (2013.01 - EP US); Y10S 501/903 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0218135 A2 19870415; EP 0218135 A3 19881130; EP 0218135 B1 19910502; DE 3679022 D1 19910606; JP H0220577 B2 19900509; JP S62216938 A 19870924; US 4661284 A 19870428
DOCDB simple family (application)
EP 86112964 A 19860919; DE 3679022 T 19860919; JP 22505386 A 19860925; US 77991685 A 19850925